The IEEE has ratified the802.3at standard which is the Power over Ethernet group. This now allows power to be supplied at up to 30W over a standard Ethernet port, which is enough to power small computing devices such as netbooks.
This could mean the end of lugging around laptops which hefty brick power supplies, just plug them into your local PoE switch and bang (well hopefully not a bang) and you have both power and connectivity.
It could also simplify aero power for laptops.
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